In the rich text editor:
@t00thdec4y
In a comment:
[t00thdec4y](https://chowlings.com/user/t00thdec4y)
For Names and Avatars:
In the rich text editor:
%t00thdec4y
In a comment:
[](https://chowlings.com/user/t00thdec4y) [t00thdec4y](https://chowlings.com/user/t00thdec4y)